"The only time the parasite levels get the upper hand is when the animal is weakened by poor husbandry or stressed from too much molestation (handling)."
"...or stressed from too much molestation (handling)"
I feel that this also falls under "husbandry," and I believe you're dead on target.
McK - Don't feel like you're being attacked, don't take the responses personal, as they're dealing with "deworming as a precautionary or preventative measure."
Monitor-specific: The trauma a monitor goes through in order to be dewormed can be long lasting & devastating. Both physical & emotional trauma, but probably more emotionally than anything else.
I've got a nile that will allow me to do things within its cage without affecting its behavior. Deworm her once and I guarantee that nobody can get within 5ft of it for 6 months, at least.
I strongly advise against deworming as a preventative or precautionary measure for most, if not all, of today's common reptiles. "Spyder's" questions:
"How long did it take for one of your animals to die from an overabundance of parasites?
Do you have any accounts you can speak of that are as a direct cause of said bugs and not husbandry?" might seem a bit pointed but he's right in asking for proof. Many of us speak from personal experiences - as in - having witnessed good husbandry practices eradicate parasites. Even a few, fairly severe "infestation" cases. All done without unnecessary trauma to the animal - the way Nature is intended to work.
Consider this: Years ago the medical world was gung-ho about administering antibiotics at the first sign of symptoms. As a result we now have viruses & stuff that scare the heck out of typical antibiotics. Viruses & stuff developed immunity to the antibiotics that were popularly administered. Penicillin was king for several years, now look at it.
In the case of the original post - I most likely would've suggested getting the husbandry corrected so that Nature can take its course. After hearing what the Vet said I might've suggested and/or agreed with deworming.
Let me share my view about the Vet situation in the original post: Most Vets have a scientific mindset, and there's nothing wrong with that, but sometimes it can hinder "real-world" views, thoughts ("real-world" mindsets aren't perfect, either). In this case, the Vet said, "...he is infested with 2 types of tape worms..." and charges an outrageous price for the meds. Lead & snare? You be the judge.
Eric, I do hope you're looking for another Vet. I sure would be. While I don't like to encourage the general public to take up administering meds on their own for fear of bad dosing, improper treatments, etc, I will say this: Calculate the dose rate according to dose size and animal size, per each med you were given, for future referrence. Actually, rather than that, I suggest re-evaluating your husbandry because I believe that had your husbandry been spot-on, you would've seen improvements within the timeframe of your first post about it & the Vet trip.
Please don't take offense to that because I'm not trying to embarass you or anything like that. None of us are perfect. Don't think for one minute that every one of my reptile cages are spot-on every minute of every day. I is human. Ha! Ha!
Ya'll take care!
HH
-----
Due to political correctness run amuck,
this ol' hillbilly is now referred to as an:
Appalachian American

www.natures-signature.com